/* ============================================
   Htslong.com - Inspired by Tinton Watch Theme
   Clean, Elegant, Luxury B2B Smartwatch Store
   ============================================ */

/* --- Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Jost:wght@300;400;500;600;700&family=Marcellus&display=swap');

/* --- CSS Custom Properties --- */
:root {
  /* Colors - Tinton-inspired light palette */
  --bg-primary: #f5f5f5;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-dark: #1a1a1a;
  --text-primary: #333333;
  --text-secondary: #666666;
  --text-muted: #999999;
  --accent: #b72323;
  --accent-hover: #8b1a1a;
  --accent-dim: rgba(183, 35, 35, 0.08);
  --border: #e5e5e5;
  --border-light: #f0f0f0;
  --success: #27ae60;
  --shadow: 0 2px 15px rgba(0,0,0,0.06);
  --shadow-hover: 0 8px 30px rgba(0,0,0,0.12);

  /* Typography */
  --font-heading: 'Marcellus', serif;
  --font-body: 'Jost', sans-serif;
  --font-display: 'Jost', sans-serif;

  /* Spacing */
  --section-padding: 80px;
  --section-padding-mobile: 50px;
  --container-width: 1800px;
  --container-padding: 15px;

  /* Transitions */
  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --duration: 0.3s;
}

/* --- Reset & Base --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  font-size: 10px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-body);
  font-size: 1.6rem;
  font-weight: 400;
  line-height: 1.6;
  color: var(--text-secondary);
  background-color: var(--bg-primary);
  letter-spacing: 0.06rem;
  overflow-x: hidden;
}

::selection { background: var(--accent); color: #fff; }

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.2;
  color: var(--text-primary);
  letter-spacing: 0;
}

h1 { font-size: 5rem; }
h2 { font-size: 3.4rem; }
h3 { font-size: 2.4rem; }
h4 { font-size: 1.8rem; }
p { font-size: 1.6rem; color: var(--text-secondary); }

a { color: var(--text-primary); text-decoration: none; transition: all var(--duration) var(--ease); }
a:hover { color: var(--accent); }

img { max-width: 100%; height: auto; display: block; }

/* --- Utility Classes --- */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section { padding: var(--section-padding) 0; }
@media (max-width: 768px) { .section { padding: var(--section-padding-mobile) 0; } }

.section-label {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 1.6rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

.section-header {
  text-align: center;
  margin-bottom: 5rem;
}
.section-header h2 {
  font-size: 3.4rem;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.section-header p {
  font-size: 1.6rem;
  max-width: 600px;
  margin: 0 auto;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
  font-family: var(--font-body);
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 1.4rem 3.5rem;
  border: 1px solid transparent;
  border-radius: 0;
  cursor: pointer;
  transition: all var(--duration) var(--ease);
  text-decoration: none;
  line-height: 1;
}

.btn-primary {
  background: var(--text-primary);
  color: #fff;
  border-color: var(--text-primary);
}
.btn-primary:hover {
  background: #fff;
  color: var(--text-primary);
  border-color: var(--text-primary);
}

.btn-accent {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-accent:hover {
  background: #fff;
  color: var(--accent);
  border-color: var(--accent);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--text-primary);
}
.btn-outline:hover {
  background: var(--text-primary);
  color: #fff;
}

.btn-outline-white {
  background: transparent;
  color: #fff;
  border-color: #fff;
}
.btn-outline-white:hover {
  background: #fff;
  color: var(--text-primary);
}

/* --- Preloader --- */
.preloader {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: #fff;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s, visibility 0.5s;
}
.preloader.hidden { opacity: 0; visibility: hidden; }
.preloader .spinner {
  width: 40px; height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* --- Navigation --- */
.announcement-bar {
  background: var(--bg-dark);
  color: #fff;
  text-align: center;
  padding: 0.8rem 0;
  font-size: 1.2rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  transition: all var(--duration);
}
.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.5rem;
  padding-bottom: 1.5rem;
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 400;
  color: var(--text-primary);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 3rem;
  list-style: none;
}
.nav-links a {
  font-size: 1.4rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-primary);
  position: relative;
  padding: 0.5rem 0;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--duration) var(--ease);
}
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }
.nav-links a:hover { color: var(--accent); }

.nav-icons {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-icons a {
  font-size: 1.8rem;
  color: var(--text-primary);
}
.nav-icons a:hover { color: var(--accent); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--text-primary);
  transition: all var(--duration);
}
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* --- Breadcrumb --- */
.breadcrumb {
  background: var(--bg-secondary);
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border);
}
.breadcrumb .container {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-size: 1.4rem;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { color: var(--text-primary); }

/* --- Hero Slideshow (Swiper) --- */
.hero-slideshow {
  position: relative;
  overflow: hidden;
}
.hero-slideshow .swiper-slide {
  position: relative;
  height: 85vh;
  min-height: 600px;
  display: flex;
  align-items: center;
}
.hero-slide-bg {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.hero-slide-overlay {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.25);
}
.hero-slide-content {
  position: relative;
  z-index: 2;
  max-width: 600px;
  padding: 0 var(--container-padding);
}
.hero-slide-content .subtitle {
  font-family: var(--font-body);
  font-size: 1.4rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 2rem;
}

.hero-slide-content h1 {
  font-size: 6rem;
  color: #fff;
  margin-bottom: 2rem;
  text-transform: uppercase;
  line-height: 1.1;
}
@media (max-width: 768px) {
  .hero-slide-content h1 { font-size: 3.5rem; }
  .hero-slideshow .swiper-slide { height: 60vh; min-height: 400px; }
}

.hero-slide-content p {
  font-size: 1.8rem;
  color: rgba(255,255,255,0.9);
  margin-bottom: 3rem;
  line-height: 1.6;
}

/* Swiper navigation */
.hero-slideshow .swiper-button-next,
.hero-slideshow .swiper-button-prev {
  width: 50px; height: 50px;
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(10px);
  color: #fff;
  border-radius: 50%;
  transition: all var(--duration);
}
.hero-slideshow .swiper-button-next:hover,
.hero-slideshow .swiper-button-prev:hover {
  background: var(--accent);
}
.hero-slideshow .swiper-button-next::after,
.hero-slideshow .swiper-button-prev::after {
  font-size: 1.6rem;
  font-weight: bold;
}
.hero-slideshow .swiper-pagination-bullet {
  width: 12px; height: 12px;
  background: rgba(255,255,255,0.5);
  opacity: 1;
}
.hero-slideshow .swiper-pagination-bullet-active {
  background: var(--accent);
}

/* --- Banner Grid Section --- */
.banner-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 2rem;
}
.banner-grid .banner-large {
  grid-row: span 2;
}
.banner-grid .banner-small-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.banner-item {
  position: relative;
  overflow: hidden;
  border-radius: 0;
  cursor: pointer;
}
.banner-item .banner-image {
  width: 100%;
  height: 100%;
  min-height: 300px;
  background-size: cover;
  background-position: center;
  transition: transform 0.8s var(--ease);
}
.banner-item:hover .banner-image {
  transform: scale(1.05);
}
.banner-item .banner-overlay {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.15);
  transition: background var(--duration);
}
.banner-item:hover .banner-overlay {
  background: rgba(0,0,0,0.35);
}
.banner-item .banner-text {
  position: absolute;
  padding: 3rem;
  z-index: 2;
}
.banner-item .banner-text.bottom-left { bottom: 0; left: 0; }
.banner-item .banner-text.center { top: 50%; left: 50%; transform: translate(-50%,-50%); text-align: center; }
.banner-item .banner-text .banner-subtitle {
  font-size: 1.4rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 1rem;
}
.banner-item .banner-text h3 {
  font-size: 2.8rem;
  color: #fff;
  text-transform: uppercase;
  margin-bottom: 2rem;
}
.banner-item .banner-btn {
  display: inline-block;
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #fff;
  padding: 1rem 2.5rem;
  border: 1px solid #fff;
  transition: all var(--duration);
}
.banner-item:hover .banner-btn {
  background: #fff;
  color: var(--text-primary);
}

/* --- Featured Products Carousel --- */
.product-slider {
  position: relative;
  padding: 0 15px;
}
.product-slider .swiper {
  padding: 10px 0 40px;
}
.product-slider .swiper-slide {
  height: auto;
}

/* Product Card */
.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  overflow: hidden;
  transition: all var(--duration);
  text-align: center;
  display: block;
  text-decoration: none;
}
.product-card:hover {
  box-shadow: var(--shadow-hover);
  border-color: transparent;
}

.product-card .card-image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 1;
  background: #fafafa;
}
.product-card .card-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 2rem;
  transition: transform 0.6s var(--ease);
}
.product-card:hover .card-image img {
  transform: scale(1.05);
}

.product-card .card-image .badges {
  position: absolute;
  top: 1.5rem;
  left: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  z-index: 2;
}
.product-card .badge {
  display: inline-block;
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.4rem 1rem;
  background: var(--accent);
  color: #fff;
}

.product-card .card-actions {
  position: absolute;
  bottom: -50px;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  gap: 1rem;
  padding: 1.5rem;
  transition: bottom var(--duration) var(--ease);
  background: rgba(255,255,255,0.95);
}
.product-card:hover .card-actions {
  bottom: 0;
}

.product-card .card-action-btn {
  width: 40px; height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--text-primary);
  color: #fff;
  border: none;
  border-radius: 50%;
  font-size: 1.6rem;
  cursor: pointer;
  transition: all var(--duration);
  text-decoration: none;
}
.product-card .card-action-btn:hover {
  background: var(--accent);
  color: #fff;
}

.product-card .card-body {
  padding: 2rem;
}
.product-card .card-body .vendor {
  font-size: 1.2rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
}
.product-card .card-body h4 {
  font-family: var(--font-body);
  font-size: 1.6rem;
  font-weight: 500;
  margin-bottom: 0.8rem;
  letter-spacing: 0.04em;
}
.product-card .card-body h4 a {
  color: var(--text-primary);
}
.product-card .card-body h4 a:hover {
  color: var(--accent);
}
.product-card .card-body .price {
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--accent);
}

/* Slider Navigation */
.product-slider .swiper-button-next,
.product-slider .swiper-button-prev {
  width: 45px; height: 45px;
  background: var(--text-primary);
  color: #fff;
  border-radius: 50%;
  top: 40%;
}
.product-slider .swiper-button-next:hover,
.product-slider .swiper-button-prev:hover {
  background: var(--accent);
}
.product-slider .swiper-button-next::after,
.product-slider .swiper-button-prev::after {
  font-size: 1.4rem;
  font-weight: bold;
}
.product-slider .swiper-pagination-bullet-active {
  background: var(--accent);
}

/* --- Features Section --- */
.features-section {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}
.feature-item {
  padding: 4rem 3rem;
  text-align: center;
  border-right: 1px solid var(--border);
}
.feature-item:last-child { border-right: none; }
.feature-item .feature-icon {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  color: var(--accent);
}
.feature-item h4 {
  font-family: var(--font-body);
  font-size: 1.6rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
  color: var(--text-primary);
}
.feature-item p {
  font-size: 1.4rem;
  color: var(--text-secondary);
}

/* --- Testimonials Section --- */
.testimonials-section {
  background: var(--bg-secondary);
}
.testimonial-item {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem;
}
.testimonial-item .quote {
  font-size: 2rem;
  font-style: italic;
  color: var(--text-primary);
  margin-bottom: 2rem;
  line-height: 1.5;
}
.testimonial-item .author {
  font-size: 1.4rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
}

/* --- Newsletter --- */
.newsletter-section {
  background: var(--bg-dark);
  padding: 6rem 0;
  text-align: center;
}
.newsletter-section h2 {
  color: #fff;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.newsletter-section p {
  color: rgba(255,255,255,0.7);
  margin-bottom: 3rem;
}
.newsletter-form {
  display: flex;
  max-width: 500px;
  margin: 0 auto;
  gap: 0;
}
.newsletter-form input {
  flex: 1;
  padding: 1.5rem 2rem;
  border: 1px solid rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.05);
  color: #fff;
  font-family: var(--font-body);
  font-size: 1.4rem;
  outline: none;
  transition: border-color var(--duration);
}
.newsletter-form input:focus {
  border-color: var(--accent);
}
.newsletter-form button {
  padding: 1.5rem 3rem;
  background: var(--accent);
  color: #fff;
  border: none;
  font-family: var(--font-body);
  font-size: 1.4rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: all var(--duration);
}
.newsletter-form button:hover {
  background: #fff;
  color: var(--accent);
}

/* --- Footer --- */
.footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.7);
  padding: 6rem 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 4rem;
}
.footer h4 {
  font-family: var(--font-body);
  font-size: 1.4rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: #fff;
  margin-bottom: 2rem;
}
.footer p { font-size: 1.4rem; color: rgba(255,255,255,0.5); line-height: 1.8; }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 1rem; }
.footer-links a {
  font-size: 1.4rem;
  color: rgba(255,255,255,0.5);
  transition: all var(--duration);
}
.footer-links a:hover { color: #fff; padding-left: 5px; }
.footer-contact p {
  font-size: 1.4rem;
  margin-bottom: 1rem;
}
.footer-bottom {
  margin-top: 4rem;
  padding: 2rem 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center;
  font-size: 1.3rem;
  color: rgba(255,255,255,0.3);
}

/* --- Page Header --- */
.page-header {
  background: var(--bg-secondary);
  padding: 5rem 0;
  text-align: center;
  border-bottom: 1px solid var(--border);
}
.page-header h1 {
  font-size: 3.4rem;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.page-header p {
  font-size: 1.6rem;
  max-width: 600px;
  margin: 0 auto;
}

/* --- Product Grid (Products Page) --- */
.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2rem 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 3rem;
}
.filter-tabs {
  display: flex;
  gap: 2rem;
}
.filter-tab {
  font-size: 1.4rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.5rem 0;
  border: none;
  background: none;
  position: relative;
  transition: color var(--duration);
}
.filter-tab::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--duration);
}
.filter-tab:hover,
.filter-tab.active { color: var(--accent); }
.filter-tab.active::after { width: 100%; }

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

/* Product Grid Card */
.product-grid-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  overflow: hidden;
  transition: all var(--duration);
  text-decoration: none;
  display: block;
}
.product-grid-card:hover {
  box-shadow: var(--shadow-hover);
  border-color: transparent;
}
.product-grid-card .card-image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 1;
  background: #fafafa;
}
.product-grid-card .card-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 2rem;
  transition: transform 0.6s;
}
.product-grid-card:hover .card-image img {
  transform: scale(1.05);
}
.product-grid-card .card-image .placeholder-icon {
  font-size: 5rem;
  opacity: 0.15;
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%,-50%);
}
.product-grid-card .card-body {
  padding: 2rem;
  text-align: center;
}
.product-grid-card .card-body .model {
  font-family: var(--font-body);
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}
.product-grid-card .card-body .category {
  font-size: 1.2rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.8rem;
}
.product-grid-card .card-body .description {
  font-size: 1.3rem;
  color: var(--text-secondary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 1rem;
}

/* --- Product Detail Page --- */
.product-detail {
  background: var(--bg-secondary);
  padding: 5rem 0;
}
.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}
.product-gallery {
  position: sticky;
  top: 10rem;
}
.product-gallery-main {
  aspect-ratio: 1;
  background: #fafafa;
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  overflow: hidden;
}
.product-gallery-main img {
  width: 85%;
  height: 85%;
  object-fit: contain;
}
.product-gallery-thumbs {
  display: flex;
  gap: 1rem;
}
.product-gallery-thumb {
  width: 80px;
  height: 80px;
  border: 1px solid var(--border);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fafafa;
  transition: border-color var(--duration);
}
.product-gallery-thumb:hover,
.product-gallery-thumb.active {
  border-color: var(--accent);
}
.product-gallery-thumb img {
  width: 80%;
  height: 80%;
  object-fit: contain;
}

.product-info h1 {
  font-size: 3rem;
  margin-bottom: 0.5rem;
}
.product-info .category-tag {
  font-size: 1.3rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1.5rem;
}
.product-info .description {
  font-size: 1.6rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  line-height: 1.7;
}
.product-info .highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-bottom: 2.5rem;
}
.product-info .highlight-tag {
  font-size: 1.2rem;
  font-weight: 500;
  padding: 0.5rem 1.2rem;
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid var(--accent-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.product-info .actions {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 3rem;
}

/* Spec Table */
.spec-section {
  background: var(--bg-primary);
  padding: 5rem 0;
}
.spec-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
}
.spec-table th,
.spec-table td {
  padding: 1.5rem 2rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 1.4rem;
}
.spec-table th {
  font-weight: 600;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: #fafafa;
  width: 30%;
}
.spec-table td { color: var(--text-secondary); }
.spec-table tr:last-child th,
.spec-table tr:last-child td { border-bottom: none; }

/* --- About Page --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}
.about-image-placeholder {
  background: #fafafa;
  border: 1px solid var(--border);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 6rem;
}
.about-content h2 {
  font-size: 3rem;
  text-transform: uppercase;
  margin-bottom: 2rem;
}
.about-content p {
  font-size: 1.6rem;
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

/* Certifications */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 2rem;
  text-align: center;
}
.cert-item {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  padding: 3rem 2rem;
  transition: all var(--duration);
}
.cert-item:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
}
.cert-item .cert-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}
.cert-item h4 {
  font-family: var(--font-body);
  font-size: 1.4rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* --- OEM/ODM Page --- */
.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}
.compare-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  padding: 4rem;
}
.compare-card h3 {
  font-size: 2.4rem;
  text-transform: uppercase;
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 2px solid var(--accent);
}
.compare-list {
  list-style: none;
}
.compare-list li {
  padding: 1rem 0;
  padding-left: 2rem;
  position: relative;
  font-size: 1.5rem;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-light);
}
.compare-list li:last-child { border-bottom: none; }
.compare-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

/* Steps */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}
.step-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  padding: 3rem 2rem;
  text-align: center;
  transition: all var(--duration);
  position: relative;
}
.step-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
}
.step-card .step-number {
  font-family: var(--font-heading);
  font-size: 4rem;
  color: var(--accent);
  margin-bottom: 1rem;
  opacity: 0.3;
}
.step-card h4 {
  font-family: var(--font-body);
  font-size: 1.6rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}
.step-card p {
  font-size: 1.4rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --- Contact Page --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
}
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.form-group label {
  display: block;
  font-size: 1.3rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-primary);
  margin-bottom: 0.8rem;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 1.5rem;
  border: 1px solid var(--border);
  background: var(--bg-secondary);
  font-family: var(--font-body);
  font-size: 1.5rem;
  color: var(--text-primary);
  outline: none;
  transition: border-color var(--duration);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
}
.form-group textarea { min-height: 150px; resize: vertical; }

.contact-info {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  padding: 4rem;
}
.contact-info h3 {
  font-size: 2.4rem;
  text-transform: uppercase;
  margin-bottom: 2.5rem;
}
.contact-info-item {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 2rem;
}
.contact-info-item .icon {
  font-size: 2rem;
  color: var(--accent);
  flex-shrink: 0;
}
.contact-info-item h4 {
  font-family: var(--font-body);
  font-size: 1.4rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.3rem;
}
.contact-info-item p {
  font-size: 1.5rem;
}

/* FAQ */
.faq-item {
  border: 1px solid var(--border);
  background: var(--bg-secondary);
  margin-bottom: 0.5rem;
}
.faq-question {
  width: 100%;
  padding: 1.8rem 2rem;
  text-align: left;
  background: none;
  border: none;
  font-family: var(--font-body);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-question:hover { color: var(--accent); }
.faq-answer {
  padding: 0 2rem 1.8rem;
  font-size: 1.4rem;
  color: var(--text-secondary);
  line-height: 1.7;
  display: none;
}
.faq-item.open .faq-answer { display: block; }
.faq-icon { transition: transform var(--duration); }
.faq-item.open .faq-icon { transform: rotate(45deg); }

/* --- CTA Section --- */
.cta-section {
  background: var(--bg-dark);
  text-align: center;
  padding: 8rem 0;
}
.cta-section h2 {
  color: #fff;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}
.cta-section p {
  color: rgba(255,255,255,0.7);
  font-size: 1.6rem;
  margin-bottom: 3rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* --- Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s var(--ease);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Back to Top --- */
.back-to-top {
  position: fixed;
  bottom: 3rem;
  right: 3rem;
  width: 45px;
  height: 45px;
  background: var(--text-primary);
  color: #fff;
  border: none;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  cursor: pointer;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration);
}
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--accent); }

/* --- Responsive --- */
@media (max-width: 1200px) {
  .product-grid { grid-template-columns: repeat(3, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-item { border-bottom: 1px solid var(--border); }
  .feature-item:nth-child(3),
  .feature-item:nth-child(4) { border-bottom: none; }
}

@media (max-width: 1024px) {
  .banner-grid { grid-template-columns: 1fr; }
  .banner-grid .banner-large { grid-row: span 1; }
  .product-detail-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .compare-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .cert-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  html { font-size: 9px; }
  .nav-links {
    position: fixed;
    top: 0; right: -100%;
    width: 300px;
    height: 100vh;
    background: var(--bg-secondary);
    flex-direction: column;
    padding: 8rem 3rem;
    gap: 2rem;
    transition: right var(--duration);
    z-index: 999;
    box-shadow: -5px 0 30px rgba(0,0,0,0.1);
  }
  .nav-links.open { right: 0; }
  .nav-toggle { display: flex; z-index: 1000; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: 1fr; }
  .feature-item { border-right: none; border-bottom: 1px solid var(--border); }
  .feature-item:last-child { border-bottom: none; }
  .steps-grid { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  h1 { font-size: 3.5rem; }
  h2 { font-size: 2.8rem; }
  .hero-slide-content h1 { font-size: 3.5rem; }
}

@media (max-width: 480px) {
  .product-grid { grid-template-columns: 1fr; }
  .banner-grid .banner-small-grid { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: 1fr; }
}